Felix Kolotinsky, the plaintiff in the case, claims that Amazon collected his personal information through the "Speedtest by Ookla" app on his phone.

Don’t click unexpected links — always check your Amazon or UPS account directly via the official app. Be skeptical of urgency — real companies won’t lock your account or demand payment within minutes.

A new lawsuit is accusing Amazon of secretly tracking users through their smartphones, collecting detailed location data.

Amazon.com was sued on Wednesday by consumers who accused the retailing giant of secretly tracking their movements through their cellphones, and selling data it collects.